Anyone paying attention may have been mislead as you have been, but your own sources highest estimates aggregated (which is likely 1.5-2x higher than reality) put the US around 1/5 of all deaths combatant and civilian in this cherry picked time period. The reality is that there is a LOT of war happening and death happening and the US is only one of the players.

https://ourworldindata.org/grapher/civilian-and-combatant-de...

Acknowledging the mass harm war causes and the role the US has to play in that is absolutely true and valid. Pretending the US is acting egregious in comparison to others and only hyperfocusing on proving "US bad" when someone asks for context of how bad the US is overall doesn't serve anything than show your opinion and lack of willingness to discuss it on open and reasonable terms.